Patent US3807945A successfully refreshed from Google Patents.
US3807945A
Expired / Lapsed
US
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Process for the dyeing of mixtures of cellulose, polyester and polyacrylonitrile fibers from one bath
Assignee: Hoechst AG
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Filing: 1972-01-24
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Granted: 1974-04-30
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Expires: 1992-01-24
Abstract
Abstract Process for the dyeing of mixtures of cellulose, linear polyester and polyacrylonitrile fibers with reactive dyestuffs of the vinylsulfone type, disperse and cationic dyestuffs, wherein the goods are treated with a bath containing alkalies, non-ionic dispersing agents, a reactive dyestuff and a disperse dyestuff at 20* to 80*C and wherein subsequently free acid and a cationic dyestuff are added and the dyeing is completed in an acid medium at 95* to 130*C. Compared with the hitherto used two- or threebath processes the process of the invention has the particular advantage of saving 25 to 50 percent of dyeing time.
Inventors
- 👤 Der Eltz H Von
- 👤 J Jeths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:58
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/82; D06P3/8204; D06P1/00; D06P1/44; D06P1/60; D06P1/613; Y; Y10; Y10S; Y10S534/00; Y10S534/01; Y10S8/00; Y10S8/907; Y10S8/916; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/927
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
21 words
A process according to claim 1 wherein said cellulose fibers are dyed at a temperature between about 40*C. and about 60*C.
Claim 2
Dependent Claim
25 words
A process according to claim 1 wherein said polyester fibers and said polyacrylonitrile fibers are dyed at a pH between about 4.5 and about 5.5.
Claim 3
Dependent Claim
15 words
A process according to claim 1 wherein a carrier is added to the alkaline bath.
Claim 4
Dependent Claim
15 words
A process according to claim 1 wherein a carrier is added to the acid bath.
Claim 5
Dependent Claim
37 words
A process according to claim 1 wherein said non-ionic dispersing agent is an oxethylation product of a fatty amine, fatty amide or fatty alcohol or a polyglycol of average molecular weight between about 1,500 and about 6,000.
Claim 6
Dependent Claim
19 words
A process according to claim 1 wherein said reactive dyestuff is an anthraquinone, an azo or a phthalocyanine dyestuff.
Claim 7
Dependent Claim
33 words
A process according to claim 1 wherein said group that forms a vinylsulfone reactive group in alkaline medium is a sulfuric acid ester or a thiosulfuric acid ester of a Beta -hydroxy-ethyl-sulfone group.
Claim 8
Dependent Claim
17 words
A process according to claim 1 wherein said disperse dyestuff is an azo or an anthraquinone dyestuff.
Claim 9
Dependent Claim
26 words
A process according to claim 1 wherein said basic dyestuff is an azo, azomethine, methine, anthraquinone, nitro, diphenylmethane, triphenylmethane, phenazine, oxazine, thiazine, xanthene or quinophthalone dyestuff.
Claim 10
Dependent Claim
21 words
A process according to claim 1 wherein said alkaline aGent is sodium or potassium hydroxide, carbonate, bicarbonate, diphosphate, triphosphate or silicate.
Claim 11
Dependent Claim
21 words
A process according to claim 1 wherein said free organic or inorganic acid is hydrochloric, sulfuric, phosphoric, acetic or formic acid.
References Cited (Backward Citations)
US3199942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |